I am wanting to book a round the world trip using Qantas/One World in 2026. At the moment I can only book till March. Just wondering if anyone has some advice that if you book as far as you can go say, Asia, Europe, US but plan to add on up maybe June, should I wait to June or do I book as far as I can and add on later and still stay within the 365,800 points. I am not sure if that makes sense but hope someone can advise.